Table 2.

DWI ADC scores for different groups regarding each measurement in duplicate. Active group includes Group 1 pretreatment and Group 2. Duplicate measurements per side were averaged prior to the tests. Corrected values indicate sacroiliac sides subtracted from sacral and averaged.

	Group 1 Pretreatment		Group 1 Postreatment		Group 2		Active		Group 3
	Mean	SD	Mean	SD	Mean	SD	Mean	SD	Mean	SD
ADC.right.1	0.672	0.425	0.408	0.144	0.947	0.409	0.820	0.434	0.403	0.146
ADC.right.2	0.665	0.414	0.448	0.124	0.949	0.423	0.818	0.438	0.400	0.150
ADC.left.1	0.831	0.543	0.598	0.356	0.802	0.492	0.815	0.509	0.415	0.150
ADC.left.2	0.846	0.517	0.609	0.339	0.835	0.502	0.840	0.502	0.416	0.160
ADC.sacrum.1	0.301	0.148	0.357	0.143	0.330	0.183	0.317	0.166	0.438	0.137
ADC.sacrum.2	0.306	0.163	0.367	0.140	0.332	0.178	0.820	0.434	0.439	0.136
Corrected score	0.450	0.433	0.154	0.23	0.552	0.273	0.505	0.354	−0.03	0.07

DWI: diffusion-weighted imaging; ADC: apparent diffusion coefficient.